The agricultural output of England and Wales 1925

An Introduction to the theory of statistics

Bibliographic data

Monograph

Identifikator:: 1757028552

URN:: urn:nbn:de:zbw-retromon-135495

Document type:: Monograph

Title:: The agricultural output of England and Wales 1925

Place of publication:: London

Publisher:: Stat. Off.

Year of publication:: 1927

Scope:: XV, 152 Seiten; graph. Darst., Kt.

Digitisation:: 2021

Collection:: Economics Books

Usage license:: Get license information via the feedback formular.

SUPPLEMENTS—GOODNESS OF FIT. £7 zero. The same statement must hold good for every row, Hence, if » be the number of rows, ¢ the number of columus, the number of algebraically independent values of é is (r—1)(c—1), and the tables must be entered with the value w=>r-1)c-1)+1. The student will realise that this is a reasonable rule if he considers that when we take n’ as the number of classes, the comparison frequencies being given a priori, we are taking it as one more than the number of algebraically independent frequencies, since the total number of observations is fixed. The following will serve as an illustration (Yule, ref. 5 of Chapter V.). Sixteen pieces of photographic paper were printed down to different depths of colour from nearly white to a very deep blackish brown. Small scraps were cut from each sheet and pasted on cards, two scraps on each card one above the other, combining scraps from the several sheets in all possible ways, so that there were 256 cards in the pack. Twenty observers then went through the pack independently, each one naming each tint either “light,” “medium,” or “dark.” TaBLE showing the Name (light, medium, or dark) assigned to each of two Pieces of Photographic Paper on a Card: 256 Cards and 20 Observers. Upper figure, observed frequency ; central figure, independence frequency ; bottom figure, difference 8. (Yule, ref. 5 of Chap. V., Table XXI.) . Name assigned to Upper Tint on Card. Name assigned to Lower Tint on Total. Card, Light. Medium. Dark. 850 571 580 aang Light 785 633 583 +65 - 62 - 3 618 503 455 So Medium . 653 527 486 —- 35 +66 - 31 540 456 457 RE] Dark 570 460 423 —-30 - 4 +34 Tot? ro g 377 “OU; 1660 14D¢ aL 2008 1620 149% 512¢

Access restriction

Copyright

fullscreen: An Introduction to the theory of statistics

Monograph

Table of contents

Download

Monograph

This page

Image fragment

Citation links

Citation recommendation